*
   * <p>The returned multiset will throw an {@link IllegalArgumentException} on attempts to add
   * elements outside its range.
   */
  SortedMultiset<E> headMultiset(@ParametricNullness E upperBound, BoundType boundType);

  /**
   * Returns a view of this multiset restricted to the range between {@code lowerBound} and {@code
   * upperBound}. The returned multiset is a view of this multiset, so changes to one will be

    }

    @Override
    BoundType typeAsLowerBound() {
      return BoundType.CLOSED;
    }

    @Override
    BoundType typeAsUpperBound() {
      return BoundType.OPEN;
    }

    @Override
    Cut<C> withLowerBoundType(BoundType boundType, DiscreteDomain<C> domain) {
      switch (boundType) {
        case CLOSED:
          return this;
        case OPEN:

   * endpoint behavior.
   */
  static <T extends @Nullable Object> GeneralRange<T> downTo(
      Comparator<? super T> comparator, @ParametricNullness T endpoint, BoundType boundType) {
    return new GeneralRange<>(comparator, true, endpoint, boundType, false, null, OPEN);
  }

  /**
   * Returns everything below the endpoint relative to the specified comparator, with the specified
   * endpoint behavior.
   */

  }

  @Override
  public SortedMultiset<E> headMultiset(E upperBound, BoundType boundType) {
    return Multisets.unmodifiableSortedMultiset(delegate().headMultiset(upperBound, boundType));
  }

  @Override
  public SortedMultiset<E> subMultiset(
      E lowerBound, BoundType lowerBoundType, E upperBound, BoundType upperBoundType) {
    return Multisets.unmodifiableSortedMultiset(

   */
  public static <C extends Comparable<?>> Range<C> range(
      C lower, BoundType lowerType, C upper, BoundType upperType) {
    checkNotNull(lowerType);
    checkNotNull(upperType);

    Cut<C> lowerBound =
        (lowerType == BoundType.OPEN) ? Cut.aboveValue(lower) : Cut.belowValue(lower);
    Cut<C> upperBound =
        (upperType == BoundType.OPEN) ? Cut.belowValue(upper) : Cut.aboveValue(upper);

  public SortedMultiset<E> headMultiset(@ParametricNullness E upperBound, BoundType boundType) {
    return Multisets.unmodifiableSortedMultiset(delegate().headMultiset(upperBound, boundType));
  }

  @Override
  public SortedMultiset<E> subMultiset(
      @ParametricNullness E lowerBound,
      BoundType lowerBoundType,
      @ParametricNullness E upperBound,
      BoundType upperBoundType) {
    return Multisets.unmodifiableSortedMultiset(

  public SortedMultiset<E> headMultiset(@ParametricNullness E toElement, BoundType boundType) {
    return forwardMultiset().tailMultiset(toElement, boundType).descendingMultiset();
  }

  @Override
  public SortedMultiset<E> subMultiset(
      @ParametricNullness E fromElement,
      BoundType fromBoundType,
      @ParametricNullness E toElement,
      BoundType toBoundType) {
    return forwardMultiset()

  }

  @Override
  public ImmutableSortedMultiset<E> headMultiset(E upperBound, BoundType boundType) {
    return forward.tailMultiset(upperBound, boundType).descendingMultiset();
  }

  @Override
  public ImmutableSortedMultiset<E> tailMultiset(E lowerBound, BoundType boundType) {
    return forward.headMultiset(lowerBound, boundType).descendingMultiset();
  }

  @Override
  boolean isPartialView() {

      for (BoundType type : BoundType.values()) {
        builder.add(Range.upTo(i, type));
        builder.add(Range.downTo(i, type));
      }
    }

    // Add two-ended ranges
    for (int i = MIN_BOUND; i <= MAX_BOUND; i++) {
      for (int j = i + 1; j <= MAX_BOUND; j++) {
        for (BoundType lowerType : BoundType.values()) {
          for (BoundType upperType : BoundType.values()) {

      for (BoundType boundType : BoundType.values()) {
        queryBuilder.add(Range.upTo(i, boundType));
        queryBuilder.add(Range.downTo(i, boundType));
      }
      queryBuilder.add(Range.singleton(i));
      queryBuilder.add(Range.openClosed(i, i));
      queryBuilder.add(Range.closedOpen(i, i));

      for (BoundType lowerBoundType : BoundType.values()) {